I am not surprised that your angry there appears to be have a lack of basic care, respect and communication. It is difficult enough when your loved ones are in hospital without it appearing that they are a second hand object, there is after all a minimum standard of care that every patient deserves and is entitled to. I presume that he was in a bed in the A&E ward and not on a trolley for the duration of his stay, it is unacceptable to keep patients in A&E due to lack of beds as this is really not the appropriate area to provide the care required. It must have come as a shock to be told he had a fractured vertebrae when you had previously been told all tests were negative - but I suppose it is now clear why he was in so much pain.
It may be worth putting something in writing to the hospital in question stating your concerns about the lack of care your dad appears to have received, if there is a PD nurse specialist in the hospital it would have been beneficial if A&E had contacted him/her.
I hope with the morphine your dad manages to get some pain relief. I would also be asking for a home visit from your dads GP, as it would be difficult for him to attend the surgery right now.
When I read your post it made me embarrassed to be a nurse
I would like to think this would not have happened in the hospital I work in but was there is always a pressure on beds who knows what would have happened.
?Take care and I hope your dad improves with the correct medication regime.